Is there any way to make the ST() argument stack look like a double *?

I've spent the last 3 hours reading basically the same informatoin in a dozen different tutorials.

I want to pass an array @a = (0.3, 0.2, 0.4) to a C function. Normally that's really easy: 

void
something(a,b,c)
    double a
    double b
    double c

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That actuall turns into (in the .c): 
double a = (double) SvNV( ST(1) );
double b = (double) SvNV( ST(2) );
double c = (double) SvNV( ST(3) );

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But what if the C library function expected an array of doubles (double *)? All I can think to do is make an array, and copy the data into it and pass that. Which is a waste, since the function something is obviously going to iterate over it again....

Is there any way to make the ST() argument stack look like a double *? 

void
something(array)
    double * array
    CODE:
       array = (double *) (MAJIK_STUFF(ST))

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In reply to double array in XS by jettero

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